Quad SPDT Switch
ADG333A
FEATURES
FUNCTIONAL BLOCK DIAGRAM
44 V supply maximum ratings
VSS to VDD analog signal range
Low on resistance (45 Ω max)
Low ∆RON (5 Ω max)
S4A
D2
S1A
D1
S4B
S1B
IN1
IN4
Low RON match (4 Ω max)
Low power dissipation
Fast switching times
tON < 175 ns
ADG333A
IN2
IN3
S2B
D2
S3B
D3
tOFF < 145 ns
S2A
S3A
Low leakage currents (5 nA max)
Low charge injection (10 pC max)
Break-before-make switching action
SWITCHES SHOWN FOR A LOGIC 1 INPUT
Figure 1.
APPLICATIONS
Audio and video switching
Battery-powered systems
Test equipment
Communication systems
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG333A is a monolithic CMOS device comprising four
independently selectable SPDT switches. It is designed on an
LC2MOS process, which provides low power dissipation yet
achieves a high switching speed and a low on resistance.
1. Extended signal range.
The ADG333A is fabricated on an enhanced LC2MOS
process, giving an increased signal range which extends to
the supply rails.
2. Low power dissipation.
The on resistance profile is very flat over the full analog input
range, ensuring good linearity and low distortion when
switching audio signals. High switching speed also makes the
part suitable for video signal switching. CMOS construction
ensures ultralow power dissipation, making the part ideally
suited for portable, battery-powered instruments.
3. Low RON
.
4. Single-supply operation.
For applications where the analog signal is unipolar, the
ADG333A can be operated from a single rail power supply.
The part is fully specified with a single 12 V supply.
When they are on, each switch conducts equally well in both
directions and has an input signal range that extends to the
power supplies. In the off condition, signal levels up to the
supplies are blocked. All switches exhibit break-before-make
switching action for use in multiplexer applications. Inherent
in the design is low charge inject
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
© 2005 Analog Devices, Inc. All rights reserved.
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